As Shubhanshu Shukla reached the ISS, he was assigned a unique number. But why are astronauts given these numbers? Here's ...

If astronaut Shubhanshu Shukla had fallen ill, suffered an injury, or become unfit for medical clearance prior to the launch, ...

For over five years, a persistent leak of air in the Russian Zvezda module of the International Space Station has been a ...